High quality 3mm black led bezel/holder/case. This is a great item if you want a professional install for an led in a panel, car dash, game console, or many other things. It allows for a hole to be drilled and for the bezel to be inserted into the hole to make it look "clean". The led is then inserted from the back side of the bezel and is locked in place by an edge in bezel that grabs the LED and keeps it from falling out. Just pop it in place and forget about it!